For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

In the latest research, telescope observations of 3I/ATLAS examine its chemical structure and suggest that it took shape in a ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

A new Southwest Research Institute (SwRI) study based on data from NASA's New Horizons spacecraft has uncovered insights into ...

I/ATLAS arrived fast, bright, and strange. When astronomers spotted it on July 1, 2025, they knew almost immediately this was no ordinary comet.

What can 3I/ATLAS teach astronomers about the origins of life?

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

The Hubble Space Telescope image of the interstellar comet 3I/ATLAS on July 21, 2025, when the comet was 277 million miles ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

One year ago, on July 1, 2025, astronomers discovered a fascinating new object moving through the solar system. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

When 3I Atlas was first detected, scientists believed they understood what they were seeing—but new observations quickly ...